## Basic College Mathematics (9th Edition)

Length of the needed curbing = 126.8 m Square feet of sod needed = 672 m$^{2}$
Perimeter of a Triangle: $P$ = $a$ + $b$ + $c$ Area of a Triangle: $\frac{1}{2}$$b$$h$ $P$ = 32 m + 52.8 m + 42 m $P$ = 126.8 m $A$ = $\frac{1}{2}$(42 m)(32 m) $A$ = 672 m$^{2}$